Clock



FIG. 1 is a perspective view of the clock of the present invention;

FIG. 2 is a front elevational view of the clock of FIG. 1;

FIG. 3 is a top plan view of the clock of FIG. 1;

FIG. 4 is a right side elevational view of the clock of FIG. 1; the left side being a mirror image; and,

FIG. 5 is a rear elevational view of the clock of FIG. 1.

The broken line representations appearing in FIG. 2 are for environmental purposes only and form no part of the claimed design. 

The ornamental design for a clock, as shown and described. 